Mark Lawrence Plaumann

Insider · Director · FANG

Mark Lawrence Plaumann files insider transactions with the SEC as a director of Diamondback Energy (FANG). We hold 2 disclosed purchases and sales filed since 12 June 2006, 1 of them in the last 90 days.

Files forFANG
Disclosed buys and sells2 in all, 1 in the last 90 days
Last disclosure24 August 2026

Positions held

5 posts we hold — a term names its own dates; a run of filings only says when they filed

Filed 11 October 2012 — 21 August 2026Director · Diamondback Energy (FANG)26 Form 4 lines · source: SEC Form 4
Filed 9 August 2005 — 13 November 2015Director · Republic Airways Holdings (RJET)10 Form 4 lines · source: SEC Form 4
Filed 5 October 2009 — 5 October 2015Director · Rhino Resource Partners LP (RNO)9 Form 4 lines · source: SEC Form 4
Filed 27 February 2008 — 4 October 2010Director · Icx Technologies (ICXT)9 Form 4 lines · source: SEC Form 4
Filed 3 June 2008 — 8 June 2009Director · Republic Airways Holdings ([RJET])2 Form 4 lines · source: SEC Form 4

Everything they disclosed

56 entries, newest first — one per disclosure report, one per Form 4 line

▼ sold on the open market 1,000 shares of Diamondback EnergySEC Form 424 August 2026Common Stock · traded 21 August 2026 · filed 24 August 2026
▼ sold on the open market 500 shares of Diamondback EnergySEC Form 410 June 2026Common Stock · traded 9 June 2026 · filed 10 June 2026
was granted 982 shares of Diamondback EnergySEC Form 421 May 2026Common Stock · traded 20 May 2026 · filed 21 May 2026
acquired or disposed of, other 2,965 shares of Diamondback EnergySEC Form 423 June 2025Common Stock · traded 19 June 2025 · filed 23 June 2025
was granted 1,417 shares of Diamondback EnergySEC Form 422 May 2025Common Stock · traded 21 May 2025 · filed 22 May 2025
gave away 100 shares of Diamondback EnergySEC Form 49 December 2024Common Stock · traded 5 December 2024 · filed 9 December 2024
acquired or disposed of, other 11,724 shares of Diamondback EnergySEC Form 414 November 2024Common Stock · traded 12 November 2024 · filed 14 November 2024
acquired or disposed of, other 5,862 shares of Diamondback EnergySEC Form 414 November 2024Common Stock · traded 12 November 2024 · filed 14 November 2024
▼ sold on the open market 1,150 shares of Diamondback EnergySEC Form 414 November 2024Common Stock · traded 13 November 2024 · filed 14 November 2024
gave away 2,310 shares of Diamondback EnergySEC Form 414 November 2024Common Stock · traded 13 November 2024 · filed 14 November 2024
▼ sold on the open market 240 shares of Diamondback EnergySEC Form 414 November 2024Common Stock · traded 13 November 2024 · filed 14 November 2024
was granted 1,035 shares of Diamondback EnergySEC Form 410 June 2024Common Stock · traded 6 June 2024 · filed 10 June 2024
was granted 1,527 shares of Diamondback EnergySEC Form 412 June 2023Common Stock · traded 8 June 2023 · filed 12 June 2023
was granted 1,274 shares of Diamondback EnergySEC Form 413 June 2022Common Stock · traded 9 June 2022 · filed 13 June 2022
was granted 2,435 shares of Diamondback EnergySEC Form 47 June 2021Common Stock · traded 3 June 2021 · filed 7 June 2021
was granted 2,965 shares of Diamondback EnergySEC Form 45 June 2020Common Stock · traded 3 June 2020 · filed 5 June 2020
was granted 1,830 shares of Diamondback EnergySEC Form 410 June 2019Common Stock · traded 6 June 2019 · filed 10 June 2019
was granted 1,574 shares of Diamondback EnergySEC Form 411 June 2018Common Stock · traded 7 June 2018 · filed 11 June 2018
was granted 2,055 shares of Diamondback EnergySEC Form 414 July 2017Common Stock · traded 12 July 2017 · filed 14 July 2017
▼ sold on the open market 1,000 shares of Diamondback EnergySEC Form 425 May 2017Common Stock · traded 23 May 2017 · filed 25 May 2017
▼ sold on the open market 1,900 shares of Diamondback EnergySEC Form 421 February 2017Common Stock · traded 17 February 2017 · filed 21 February 2017
was granted 1,359 shares of Diamondback EnergySEC Form 431 August 2016Common Stock · traded 28 August 2016 · filed 31 August 2016
was granted 11,728 shares of Republic Airways HoldingsSEC Form 417 November 2015Common Stock, par value $0.001 per share · traded 13 November 2015 · filed 17 November 2015
was granted 30,488 shares of Rhino Resource Partners LPSEC Form 47 October 2015Common Units · traded 5 October 2015 · filed 7 October 2015
▼ sold on the open market 3,000 shares of Diamondback EnergySEC Form 416 September 2015Common Stock · traded 14 September 2015 · filed 16 September 2015
was granted 1,578 shares of Diamondback EnergySEC Form 431 August 2015Common Stock · traded 25 August 2015 · filed 31 August 2015
was granted 2,094 shares of Rhino Resource Partners LPSEC Form 46 October 2014Common Units · traded 3 October 2014 · filed 6 October 2014
was granted 4,695 shares of Republic Airways HoldingsSEC Form 422 July 2014Common Stock, $.001 par value · traded 11 June 2014 · filed 22 July 2014
was granted 2,802 shares of Diamondback EnergySEC Form 417 July 2014Common Stock · traded 15 July 2014 · filed 17 July 2014
was granted 4,695 shares of Republic Airways HoldingsSEC Form 412 June 2014Common Stock, $.001 par value · traded 11 June 2014 · filed 12 June 2014
was granted 5,537 shares of Republic Airways HoldingsSEC Form 427 February 2014Common Stock, $.001 par value · traded 25 February 2014 · filed 27 February 2014
was granted 2,033 shares of Rhino Resource Partners LPSEC Form 48 October 2013Common Units · traded 4 October 2013 · filed 8 October 2013
acquired or disposed of, other 477 shares of Rhino Resource Partners LPSEC Form 46 February 2013Common Units · traded 31 December 2012 · filed 6 February 2013
acquired or disposed of, other 682 shares of Rhino Resource Partners LP (a derivative holding)SEC Form 46 February 2013Subordinated Units · traded 31 December 2012 · filed 6 February 2013
was granted 1,502 shares of Rhino Resource Partners LPSEC Form 430 November 2012Common Units · traded 31 October 2012 · filed 30 November 2012
was granted 1,502 shares of Rhino Resource Partners LPSEC Form 45 November 2012Common Units · traded 31 October 2012 · filed 5 November 2012
was granted 6,666 shares of Diamondback Energy (a derivative holding)SEC Form 415 October 2012Restricted Stock Units · traded 11 October 2012 · filed 15 October 2012
was granted 2,500 shares of Republic Airways Holdings (a derivative holding)SEC Form 43 August 2012Option to purchase Common Stock, par value $.001 · traded 1 August 2012 · filed 3 August 2012
was granted 1,226 shares of Rhino Resource Partners LPSEC Form 49 January 2012Common Units · traded 3 November 2011 · filed 9 January 2012
was granted 2,500 shares of Republic Airways Holdings (a derivative holding)SEC Form 46 June 2011Option to purchase Common Stock, par value $.001 · traded 2 June 2011 · filed 6 June 2011
was granted 1,220 shares of Rhino Resource Partners LPSEC Form 47 October 2010Common Units · traded 5 October 2009 · filed 7 October 2010
returned to the issuer 4,500 shares of Icx Technologies (a derivative holding)SEC Form 46 October 2010Stock Options (Right to Buy) · traded 4 October 2010 · filed 6 October 2010
returned to the issuer 1,272 shares of Icx Technologies (a derivative holding)SEC Form 46 October 2010Stock Options (Right to Buy) · traded 4 October 2010 · filed 6 October 2010
returned to the issuer 2,827 shares of Icx Technologies (a derivative holding)SEC Form 46 October 2010Stock Options (Right to Buy) · traded 4 October 2010 · filed 6 October 2010
was granted 2,500 shares of Republic Airways Holdings (a derivative holding)SEC Form 410 June 2010Option to purchase Common Stock, par value $.001 · traded 8 June 2010 · filed 10 June 2010
was granted 4,500 shares of Icx Technologies (a derivative holding)SEC Form 427 October 2009Stock Options · traded 2 September 2009 · filed 27 October 2009
returned to the issuer 3,750 shares of Icx Technologies (a derivative holding)SEC Form 410 September 2009Stock Options · traded 8 September 2009 · filed 10 September 2009
returned to the issuer 4,500 shares of Icx Technologies (a derivative holding)SEC Form 410 September 2009Stock Options · traded 8 September 2009 · filed 10 September 2009
was granted 1,273 shares of Icx Technologies (a derivative holding)SEC Form 410 September 2009Stock Options · traded 8 September 2009 · filed 10 September 2009
was granted 2,828 shares of Icx Technologies (a derivative holding)SEC Form 410 September 2009Stock Options · traded 8 September 2009 · filed 10 September 2009
was granted 2,500 shares of Republic Airways Holdings (a derivative holding)SEC Form 49 June 2009Option to Purchase Common Stock, par value $.001 · traded 8 June 2009 · filed 9 June 2009
was granted 2,500 shares of Republic Airways Holdings (a derivative holding)SEC Form 419 June 2008Option to Purchase Common Stock, par value $.001 · traded 3 June 2008 · filed 19 June 2008
was granted 4,500 shares of Icx Technologies (a derivative holding)SEC Form 428 February 2008Employee Stock Option (right to buy) · traded 27 February 2008 · filed 28 February 2008
was granted 2,500 shares of Republic Airways Holdings (a derivative holding)SEC Form 414 August 2007Option to purchase Common stock, par value $.001 · traded 7 June 2007 · filed 14 August 2007
was granted 2,500 shares of Republic Airways Holdings (a derivative holding)SEC Form 412 June 2006Option to purchase Common Stock, $.001 par value · traded 9 August 2005 · filed 12 June 2006
was granted 2,500 shares of Republic Airways Holdings (a derivative holding)SEC Form 412 June 2006Option to purchase Common Stock, $.001 par value · traded 7 June 2006 · filed 12 June 2006

Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.